.case {
    padding-top: 20px;
}

.case_item:last-of-type {
    border-bottom: 1px solid #dfdfdf;
}

@media screen and (max-width: 1920px) {}

@media screen and (min-width: 900px) {}



@media screen and (max-width: 800px) {
    .case_bg {
        width: 90%;
        margin-left: auto;
        margin-right: auto;
    }

    .case {
        width: 100%;
        min-width: 100%;
    }
}